Implement `#[rustc_must_implement_one_of]` attribute#92164

Merged

bors merged 9 commits intorust-lang:masterfrom WaffleLapkin:rustc_must_implement_one_of_attr

Jan 18, 2022

+431-4

Commits on Jan 10, 2022

Fix #[rustc_must_implement_one_of]
WaffleLapkin
committed

Commits on Jan 11, 2022

Add a test for ungated #[rustc_must_implement_one_of]
WaffleLapkin
committed

Commits on Jan 14, 2022

Check for duplicate arguments in #[rustc_must_implement_one_of]
WaffleLapkin
committed
Do not use HashSet for #[rustc_must_implement_one_of]
WaffleLapkin
committed
Use Symbol for dup check in #[rustc_must_implement_one_of]
WaffleLapkin
committed